Some scientists believe that life on Earth began about 3.5 billion years ago. What do they base this belief on?

The mode of the data at 28°C is 84.  The correct option is D.

In statistics, the mode is the variate with the highest frequency of occurrence in a given data. The mode is one of the attributes used to measure how centralized the variates within a data set are.

Mode is used as a measure of central tendency because:

In this case, we are to find the mode of the data at 28°C. The data at this location is 86, 84, 83, and 84.

86 occur just once, 84 occur twice, while 83 also occur just once in the 4 elements data set.

Thus, the mode here is 84 which occurs twice.

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When playing trick-or-treating and then realizing that the bag of Halloween candy is heavier, it depends on your perceptual set.

Thus, the correct answer is B.

Subliminаl stimulаtion is sensory stimulаtion below а person's аbsolute threshold for conscious perception. Perceptuаl set is the tendency for perceptions to be influenced by one’s expectаtions or preconceptions. Perceptuаl constаncy is the tendency to perceive the size, shаpe, color, аnd brightness of аn object аs remаining the sаme even when the imаge it cаsts on the retinа chаnges. The difference threshold is the smаllest difference in stimulаtion needed to recognize thаt two stimuli аre different from eаch other 50% of the time.

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The following are some hypotheses about the dwarf planet Pluto:

Non-falsifiable

Falsifiable

A falsifiable hypothesis is one that can be refuted by tests. The most recent technology. Non-falsifiable hypothesis, on the other hand, cannot be tested. It cannot be refuted because tests have proven it to be true.

Pluto is a dwarf planet in the Kuiper belt, which is a ring of bodies beyond Neptune's orbit. It is the ninth-largest and tenth-massive known object to orbit the Sun directly. It is by far the largest known trans-Neptunian object by volume, but it is slightly less massive than Eris.

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Answer:

A example of natural selection is when there is an abundance of a certain type of insect just for the purpose of being eaten by another animal. Another example could be when an animal with white fur is more noticeable by predators in the warmer months.

Explanation:

Answer: it would be letter a

Explanation: because the webbed feet and long feet were chosen by natural selection by water habitat and they show diversity by being different:)

Explanation:

It is false, because when we drink without eating something it speeds up alcohol absorption

The basic xylem still seems to be present close to the pith even when the plant has grown for a considerable amount of time.

Because they permit primary growth, also known as height and height expansion, these three forms of rosette are referred to as primary meristems. With more meristems, broadleaf weeds have the potential to grow larger. Secondary growth does not occur in herbaceous plants.

Meristems affect primary, secondary, and tertiary growth. The medial meristems, also known as the vascular system, govern secondary growth whereas root organizational meristems that continue to shoot apical cell structures regulate primary growth.

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Urea is formed through a process called urea synthesis, which occurs in the liver. During this process, the liver combines two molecules of ammonia with one molecule of carbon dioxide to form urea. This reaction is catalyzed by the enzyme urea synthase and requires the presence of energy in the form of ATP. The urea synthesis process helps to remove excess nitrogen from the body, as ammonia is a toxic waste product that is produced during the breakdown of proteins. The urea is then excreted from the body through the urine

Urea is synthesized in the body of many organisms as part of the urea cycle, either from the oxidation of amino acids or from ammonia. In this cycle, amino groups donated by ammonia and L-aspartate are converted to urea, while L-ornithine, citrulline, L-argininosuccinate, and L-arginine act as intermediates.

If a genotype it heterozygous trait result in white fur color, it tells you that the white fur trait it is a dominant trait.

One copy of an allele, which might come from just one parent, is called a dominant allele and results in a dominant phenotype in individuals. Having two copies of a recessive allele, one from each parent, is necessary for a recessive phenotype to develop. The dominant phenotype of a gene is present in an individual who carries both one dominant and one recessive allele. Generally speaking, they are referred to as "carriers" of the recessive allele because the recessive allele is present but the recessive phenotype is absent.

When estimating a person's likelihood of acquiring particular phenotypes, particularly genetic illnesses, dominant and recessive inheritance are helpful concepts to understand. is a dominant trait.

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The process of cell division helps the cell to avoid DNA overload by the following mechanism: Each daughter cell has its own copy of DNA and can coordinate all the activities of a smaller cell.

Thus, the correct option for this question is B.

Cell division may be defined as a process through which a parent cell significantly divides into two daughter cells with an identical amount of genetic material.

DNA overload deals with the mechanism of the larger the cell, the greater the requirement for the positioning of the cell's DNA. In order to prevent this mechanism, a cell undergoes the process of division that limits the phenomena of DNA overloading.

This happens with the help of synthesizing two new daughter cells that limit the size of the parental cell. Therefore, the correct option for this question is B.

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Full Question

The DNA of a cell is not programmed to coordinate the activities needed to keep a large cell alive. How does cell division help the cell avoid DNA overload

A. When a cell divides there is much less DNA

created than in the large cell, increasing the

overload.

B. Each daughter cell has its own copy of DNA

and can coordinate all the activities of a smaller

cell.

C. Cell division does not help cells to avoid DNA

overload.

The blank words are real, intercept, m, -4 and b in the order.

In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction

Given:

Slope m = 5

And point (-2, 7)

Slope-intercept form: y = mx + b

Where m is the slope and b is y-intercept.

If a line passes through a point (x₁ ,y₁) and have slope m

then the equation of line is

y - y₁ = m (x - x₁)

We have the equation,

y = -4x + 5

Comparing with the slope-intercept form,

m = -4 and b = 5

Therefore, slope is -4 and b = 5.

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Out of 3,000 calico cats born, only one is male. These cats are so rare that they are often referred to as feline "unicorns."

99.9% of calico cats are feminine. Two X chromosomes are required to produce a three-color (calico) coat, and an XX pair also makes the cat female. The calico fur pattern is mostly white, along with patches of two other colors. Also, since a cat's coat color is linked to her X chromosome in her cells, calico cats rarely become male. Male cells acquire only one X chromosome. That is, men usually have only one color.

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The organisms given here are paramecium, as per their structure.

A genus of eukaryotic, unicellular ciliates known as Paramecium is frequently researched as a member of the ciliate group.

In stagnant basins and ponds, paramecia can be found widely in freshwater, brackish, and marine settings.

Typically, cells have an oval, elongate, foot, or cigar form. A rigid but elastic structure known as the pellicle surrounds the cell body.

This is made up of the inner membrane known as the epiplasm, a layer of flattened membrane-bound sacs known as alveoli, and the outside cell membrane (plasma membrane).

Thus, the organism is a paramecium.

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Answer:

polyculture; monoculture

Explanation:

The polyculture showing greater productivity and stability as compared to monoculture because decrease occur in disease and no pesticides are used on the field which maintain stability. The disease that is present in the field can't affect the crop of different variety due to resistance of crop against this disease or may be of some other reason. Polyculture is recommended by many researchers in order to avoid pest or pathogen infestation to the crop which leads to better productivity.

Fungi are a kingdom of living things which have cells with a nucleus, have cell walls that contain chitin, and are heterotrophs.

Classification of living beings is very important as it allows us to systematically study their characteristics. All the living thing present on the Earth are classified into 5 kingdoms which are the Protista, Monera, Fungi, Plantae and Animalia.

The fungi kingdom includes organisms such as yeasts, mushrooms and molds. Fungi are multicellular and eukaryotic. They have a nucleus. Their cell walls are chitinous which means that they contain chitin. Their mode of nutrition is heterotrophic, that is, they are dependent on other organisms to obtain their food.

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I would cross all the layers surrounding a bacterial cell if I started on the outside capsule, plasma membrane, and cell wall.

The cell envelope is а descriptive term for the severаl lаyers of mаteriаl thаt envelope or enclose the protoplаsm of the cell. The cell protoplаsm (cytoplаsm) is surrounded by the plаsmа membrаne, а cell wаll аnd а cаpsule.

The cell wаll itself is а lаyered structure in Grаm-negаtive bаcteriа. Аll cells hаve а membrаne, which is the essential аnd definitive chаrаcteristic of а "cell". Аlmost аll procаryotes hаve а cell wаll to prevent dаmаge to the underlying protoplаst. Outside the cell wаll, foremost аs а surfаce structure, mаy be а polysаcchаride cаpsule or glycocаlyx.

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The right whisker would have been longer and also the left whisker would be the same length.

The bottom and higher ends of where the ants paused to search are shown by the whiskers. The whisker on the right would be longer if one ant had walked 11 meters, showing a shift in the upper extreme.

To analyse a dataset's distribution, a box plot is employed. A box and two lines make up the box plot. We call the two lines "whiskers." The lowest number is shown at the end of the first line, and the highest number is shown at the end of the second line.

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The following is a suitable illustration of brief negative feedback where TSH limits TRH release.

The pituitary gland's TSH induces thyroid hormone release, which is triggered by the thyroid-releasing hormone TRH produced by the hypothalamus. Thyroid epithelial cells shut down as thyroid hormone blood concentrations rise because they suppress both TSH and TRH.

Energy-demanding conditions, such as coldness and exercise, and the HPT axis are stimulated, but the axis is suppressed by conditions that disrupt the energy balance, such as fasting, inflammation, or long-term stress.

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During the splicing process, introns are eliminated, leaving just exons in the final mRNA, which are then employed to control the production of proteins, hence option B is correct.

The part of the mRNA that is actually translated into protein is the coding region, often known as the coding sequence or CDS.

The 5' UTR and 3' UTR, untranslated portions of the mRNA, are also present. A procedure known as alternative splicing allows exons to be spliced together in various configurations.

These exons and introns are a part of the earliest messenger RNA products produced during gene transcription. Exons can either be coding or non-coding, depending on whether they include instructions for building a protein.

Therefore, a section of the genome known as an exon is found inside an mRNA molecule, hence option B is correct.

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Answer: 100 percent

Explanation: this is because, the color black is more dominant in the offsprings genes(genetics) So if both mom and dad guinea pigs are black that means 100% of them will be.

Increased demand for electricity and transportation have led to increased emission of greenhouse gases.

Green house gases has been defined as those gases that are able to trap and re-radiate infrared radiation back to the earth thereby gradually causing a rise in the temperature of the earth. This phenomenon is known as global warming.

The chart from which the question should be answered is not shown but it must be known that as demand for electricity and transportation increased in the 20th and 21st century, the rate of emission of greenhouse gases increased likewise.

Therefore, Increased demand for electricity and transportation have led to increased emission of greenhouse gases.

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Answer:

everything except the oxygen as they excrete oxygen

Answer:

Coevolution plays a key role in shaping the biodiversity on Earth. Coevolution is commonly defined as reciprocal evolutionary changes brought about by interactions between species, implying that interacting species impose selection on each other.

Answer: c) Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.

Explanation:

Deep-sea hydrothermal vents are hot spots of geothermal water. The organisms living in deep-sea vents cannot obtain energy from sunlight. They are dependent on chemosynthesis, which involves the utilization of inorganic substances to produce organic substances, which allows their survival and act as a source of energy. In the given situation, bacteria present on the surface of mussels are capable of chemosynthesis also the mussels are dependent upon inorganic hydrogen in seawater. Thus chemosynthesis supports the survival of organisms living in the deep sea vents.

Answer:

извините, но мне действительно нужны очки

Explanation:

Answer:

enzyme cannot do its function

Explanation:

at which the substrate cannot enter its site

A higher surface area to volume ratio is more efficient than a lower ratio. This is due to the amount of plasma membrane relative to the volume of the cell. The more plasma membrane available to transport substances in and out of the cell, the more efficiently the cell performs its particular function.

The high surface-to-volume ratio provides a powerful “driving force” that accelerates thermodynamic processes that minimize free energy.

Increasing the surface area of ​​the cell increases the amount of material that diffuses into the cell. As volume and surface area increase, volume increases more rapidly, so for every doubling of cell volume, the surface area available for uptake is halved.

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In Model 1, if the length of the arrow represents time. then for those cancerous cells, the time necessary for the cell cycle would be reduced.

This could have implications for doctors treating cancer patients, as it could mean that the cancerous cells can divide more quickly, leading to a faster spread of the cancer and more aggressive forms of the disease.

Additionally, it could also mean that treatments such as chemotherapy and radiation may have less of an effect on the cancerous cells, as they may be able to divide faster than the treatments can act on them. Doctors treating cancer patients may need to take this into consideration when developing treatment plans, as they may need to use more aggressive treatments or shorter treatment cycles to ensure that the cancerous cells are effectively targeted.

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Silent mutations are also known as missense mutation.

In general, Nucleotide substitutions may lead to no change in the protein sequence which known as silent mutations. so , we can say that a silent mutation is a mutation that occurs within the DNA sequence, but they do not alter the amino acid sequence. These mutations takes place when in an introns, that is spliced before translation.

Hence,  example may include Single nucleotide substitutions they are not involved in changing any of the amino acid sequence so termed as silent  polymorphisms. Mutation in these base pair will also not change the function of the protein.

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Answer:

1. plant early, plant effectively

2. practice seasonal soil rotation

3. know the yield potential

4. always scout the fields

5. ensure proper water damage.

Explanation:

1. - Choosing the right time to plant is often the most important part of planting. The best strategy to use to increase yields is: if your soil is ready, start planting.

2. - When you are planting season-by-season, it is important to understand how planting recurring crops can affect your overall yield. Planting corn in consecutive years has been proven to be less effective for optimal yields. This means that corn-on-corn planting should only be considered when your soil conditions are strong enough, or your land mass is limited.

3. - It is not just enough to plan your seeds and hope for the best, you should always be sure to understand your field’s growth potential. Understanding the kind of crops you’re planting, and the kinds of seeds you are using, is important when assessing yield potential.

4. - The most sage advice you can receive about how to increase crop yields is by scouting your fields on foot. This will give you a chance to assess soil conditions, notice any weeds cropping up, and check that your crops are growing healthily. There is a lot you can miss when you are passing by your crops at high speeds, so hitting the ground and examining your crops is an important step towards a stronger crop yield.

5. - Water management is essential to crop survival and maximizing your corn’s yield potential. It’s important to ensure your crop is getting enough water, but also that they aren’t being over-watered. Developing a drainage system in your crops can help prevent waterlogging and salinization in your soil, both of which can stifle growth and production.

hope this helps!! :))

Answer:

first one is A and the second one is D  

Explanation: